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正弦波发生器
相关语句
  sine wave generator
    A TRIAL MANUFACTURE AND EXPERIMENTAL STUDY OF A PNEUMATIC SINE WAVE GENERATOR
    气动正弦波发生器的试制和实驗研究
短句来源
  sine generator
    The importance of the inductance sensor to carry out the high-accurate measurement in the finish machining system has been introduced,and the designing method of sine generator and transformer bridge in the inductance sensor circuit system is discussed. Furthermore,in order to improve the method of measure precision,the method by using computer software with digital-filter to eliminate the random interference and using linear regression to reduce the systematic error has been proposed also.
    电感测微仪进行高精度测量在精加工系统中很重要,基于电感测微仪电路中正弦波发生器和变压器电桥的设计方法,提出了运用计算机软件进行数字滤波消除测量过程中随机干扰,利用线性回归方法减小系统误差,以提高测量精度.
短句来源
  “正弦波发生器”译为未确定词的双语例句
    In this paper,a current perception threshold neurometer composed of a single-chip microprocessor 89C51,a precession harmonic oscillator and a high-voltage constant-current output circuit is developed,which can generate simple harmonic constant current with such frequencies as5Hz,250Hz,2000Hz and the output intensity ranging from 0.01 to10.00 milliamperes.
    开发一种以一片89C51单片机、一个精密正弦波发生器和一个高压恒流输出电路为核心,可产生3种不同频率(2000Hz、250Hz和5Hz)的正弦波精密恒定电流输出的感觉神经定量测定仪。 其刺激输出强度范围为0.01mA~10.00mA。
短句来源
    Based on DDS technique, the signal generator can create the sine wave signals, and it's amplitude, frequency and phase can be continuously adjusted.
    采用直接数字合成(DDS)技术构建正弦波发生器,幅值、频率、相位等连续可调;
短句来源
    The sine wave inspection method is limited by condition, does not have the sine-wave-generator or the frequency is not precise, is not easy to realize.
    正弦波检查法因条件所限,无正弦波发生器或频率不准,不易实现。
短句来源
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  sine wave generator
New three phase VFVA sine wave generator and PWM harmonics analysis
      
The new three phase VFVA sine wave generator is presented in this paper.
      
A new sampling holding three phase VFVA sine wave generator's pcinciple, circuit and experimentation waveform are introduced.
      
Hedgehogs (Erinaceus europaeus roumanicus) were found not to respond behaviourally when exposed to ultrasonic pure tones produced by a sine wave generator.
      
Adjust the frequency of the sine wave generator until the sig nal across the transducer seen on the oscilloscope is at a min imum.
      
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The pneumatic sine wave. generator is an essential tool in testing the dynamical characteristics of a regulated object or the consisting elements of an automatic control system. The manufactured generator is mainly composed of three parts, namely, the reducing gear system, the adjusting mechanisms and the motion-pressure transducer. The tested data of the generator are tisted below:

气动正弦波发生器是测試被調对象和自动化系統构成部件动态特性的必要工具。本仪器主要由減速齿輪系、调整机构以及位移—气压轉換器等三部分組成。本仪器的测試数据如下: 最大波形誤差2% 頻率范围10~(-5)~1.9周每秒調幅范围0~0.4公斤/厘米~2 移軸0.2—1公斤/厘米~2

In this paper,a current perception threshold neurometer composed of a single-chip microprocessor 89C51,a precession harmonic oscillator and a high-voltage constant-current output circuit is developed,which can generate simple harmonic constant current with such frequencies as5Hz,250Hz,2000Hz and the output intensity ranging from 0.01 to10.00 milliamperes.This device can quantitatively determine the status of nerve perception and thus a new diagnostic method for clinical pathological changes of nerves...

In this paper,a current perception threshold neurometer composed of a single-chip microprocessor 89C51,a precession harmonic oscillator and a high-voltage constant-current output circuit is developed,which can generate simple harmonic constant current with such frequencies as5Hz,250Hz,2000Hz and the output intensity ranging from 0.01 to10.00 milliamperes.This device can quantitatively determine the status of nerve perception and thus a new diagnostic method for clinical pathological changes of nerves is developed.

开发一种以一片89C51单片机、一个精密正弦波发生器和一个高压恒流输出电路为核心,可产生3种不同频率(2000Hz、250Hz和5Hz)的正弦波精密恒定电流输出的感觉神经定量测定仪。其刺激输出强度范围为0.01mA~10.00mA。该仪器能比较客观地判断神经感觉状况,为临床神经病变的诊断提供一种新方法。

A master-slave electrical impedance tomography (EIT) system for body complex impedance based on digital signal processor (DSP) is designed in this paper. Used as the master computer, a PC performs the image reconstruction and display on time, while DSP carries out such tasks as electrode selection, data acquisition and data communication with the master. Based on DDS technique, the signal generator can create the sine wave signals, and it's amplitude, frequency and phase can be continuously adjusted. The designed...

A master-slave electrical impedance tomography (EIT) system for body complex impedance based on digital signal processor (DSP) is designed in this paper. Used as the master computer, a PC performs the image reconstruction and display on time, while DSP carries out such tasks as electrode selection, data acquisition and data communication with the master. Based on DDS technique, the signal generator can create the sine wave signals, and it's amplitude, frequency and phase can be continuously adjusted. The designed feedback unit can improve the linearity and the stability of the voltage-controlled current source effectively. Undersampling technology and digital demodulation technology are used in this system in order to attain the information of real and imaginary components of the body complex impedance. Back projection method is adopted to reconstruct the image in this system. Experimental results show that this system improves the data acquisition speed and the image resolution.

设计了一种基于DSP的主从式人体复阻抗断层成像系统。系统采用PC机作为主控机,DSP控制电极选通、数据采集并与上位机通讯;采用直接数字合成(DDS)技术构建正弦波发生器,幅值、频率、相位等连续可调;加入反馈环节,有效提高了压控电流源的线性度和稳定性;采用欠采样和数字解调技术,获取人体复阻抗虚实部信息;利用反投影算法进行图像重建。试验测试与成像结果表明,该系统改进了数据采集速度和图像分辨率。

 
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